The Hopkinton Public Library Foundation will host the 12th annual Touch-a-Truck and Food Truck Festival on Sunday, May 31, from 11 a.m.-2 p.m. at the Hopkinton High School parking lot. Families can climb aboard construction, service and emergency vehicles, take a mini-train ride and purchase items from more than a dozen food trucks. Admission is $8 for adults and $5 for children (under 1 is free). Proceeds benefit library programs and improvements. For more information, including a list of food trucks and ticket information, visit hplfinc.org.